Penny Goulden said:

I'm not sure when I'm suppose to pick my pumpkins. I have one giant
atlantic that is turning orange but I think it's going to get alot bigger.
Then I have the little jack o lanterns ( I think thats what they are called)
anyway, there are alot of those mini ones, do I wait? some are very orange
already.

Cut them when the stem is hard and the rind has toughened enough that it
can't be easily pierced with a fingernail. For the little jack-o-lanterns, the
stem will become as hard as the hardest of woods. The giant pumpkin will
have a corkier stem (but it will still be dry and hard).

The longer the mini-pumpkins stay on the vine, the sweeter the fruit will be.

Once they start turning color, they won't increase in size, but they may still
put on some weight.
--
Pat in Plymouth MI

Any technology distinguishable from magic is insufficiently advanced.
(attributed to Don Marti)